Method and apparatus for making cartons



May 3, 1938; E. F. NESS METHOD AND APPARATUS FOR MAKING CARTONS Filed June 22, 1936 3 Sheets- Sheet l May 3, 1938. E. F. NESS 7 METHOD AND APPARATUS FOR MAKING CARTONS 5 Sheets-Sheet 2 Filed June 22, 1936 May-3 1938. E. F. NESSI I 2,116,362

METHOD AND APPARATUS FOR MAKING. CARTONS Filed June 22, I 1936 5 Sheets-Sheet 3 tively expensive.

Patented May 3, 19558 METHOD AND APPARATUS FOR MAKING GARTONS Edward F. Ness, Toledo, Ohio, assignor to'Morris Packaging Equipment Company, Toledo, Ohio,

a corporation of Ohio Application June 22, 1936, Serial No. 86,520

Claims.

This invention relates to the manufacture of cartons, but more particularly to cartons adapted to package lard or similar substances enclosed in sheet material providing a bag or liner disposed inside of the carton.

Heretofore substances such as lard, because of their inherent characteristics, are packaged in cardboard cartons employing a sizable amount of material which renders thecarton compara- There is a need for a carton for lard which is considerably less expensive to make and which can be closed more readily than those which are now in use.

An object of this invention is to produce a new and improved method of making cartons particularly adapted for packaging lard which uti- -liz'es a minimum amount of material and which enables the carton to' be manufactured efficiently 'liner is formed;

and inexpensively on a production basis.

Another object'is to produce a satisfactory apparatus for carrying out the above method, to enable cartons to be produced thereby economically and efficiently on a production basis.

Other objects and advantages of the invention will hereinafter appiear and for purposes of Him-- tration, but not of mitation, an embodiment of the invention is s own on the accompanying drawings, in which- Figure 1 is a diagrammatic view, partly in vertical section of a machine for folding bags or liners and then forming cartons over the liners, the parts being fed tothe machine in continuous strip formation;

Figure 2 is a fragmentary plan view of a portion of the continuous strip from which the cartons are formed;

Figure 3 is a plan view with the fold lines indicated thereon of a sheet from which the bag or Figure 4 is an enlarged vertical sectional elevation taken substantially on the line 44 of Figure 1 showing the manner in which the side tabs on the carton blank are folded;

Figure 5..is a vertical sectional elevation substantially on the line 5- -5 of Figure 1 of the mandrel or formerfor severing and initially folding the carton blank;

Figure 6 is avertical sectional elevation substantially on the line 6-6 of Figure 1, showing a part of the liner sheet folding means; 7

Figure 7 is an enlarged vertical sectional elevation substantially on the line l-l of Figure 1 the carton and secur- Figure 8 is a fragmentary plan view of a portion of the continuous strip from which the end panels are severed;

Figure 9 is a perspective view of the bag or linerin folded position upon a former;

Figure 10 is an enlarged'perspective view of a 'former on which is disposed a liner and a carton before the end panels are applied thereto; and

Figure 11 is a view similar to Figure 10 with the end'panels secured thereto, the bag or liner being completely folded preparatory to receiving a charge of fluid lard.

The illustrated embodiment of the invention comprizes an apparatus for making liners or bags and also for enclosing such bags or liners within a carton of sheet material, such as cardboard. This a paratus is diagrammatically shown on the drawings as comprizing an endless chain or carrier II) which is trained about and driven by wheels II and I2 in the direction of the arrows, the latter being driven in any suitable manner so that an intermittent or step by step motion is imparted to the carrier I0. Mounted on the outer side of the carrier Ill and arranged in spaced relation to each other are mandrels or formers I 3, in this instance fourteen formers being employed, and each former being of a substantially rectangularform and of a cross sectional area corresponding to that desired for the liner or bag, as will hereinafter appear.

Carried by'each former l3 and disposed on the forward and rearward side thereof, with respect to the direction of movement of the chain ID, are fingers l4 and 15 respectively. The fingers l4 and I5 are pivotally mounted at their inner ends I impervious to moisture, such as parchment paper,

cellulose sheet or the like, is fed from a roll L to one end of the apparatus. The carton blank body is fed to a point adjacent to the opposite end of the apparatus from supply roll C.

In the operation of the apparatus the sheet material from the roll L is delivered to the adjacent former l3, the upper surface of which is parallel to thesheet, and is then progressively folded to form a bag or container with an end.

open, after that former has moved in step by step manner along with the carrier l0. At the proper position, after the bag or liner has been folded a carton blank, severed from its strip, is forced over the bag or liner and as the carrier continues its advancing movement, the carton is folded and the end panels are secured to the carton as will hereinafter appear.

From the supply r011 L the liner sheet material S is advanced by pairs of feed rolls i8 and I1, between which is disposed a severing roll is having a knife l9 which is adapted to enter a groove 28 formed in its companion roll 2|. The knife l9 operates to sever a segment T of proper size from which to fold a bag or liner. The severed segment T is advanced by the feed rolls H to the upper side of the former 13, the finger l4 thereof having first been swung away from the former to receivethe segment T and then back to grip and hold the segment in place.

Figure 3 shows a segment T, the dotted lines of which indicate a front side panel a and rear side panel c, the panel b designating the bottom wall of the bag. The end folds are designated by the reference d and the lateral folds are designated by the letterse and 1.

During the advancing movement of the former l3 to the next station, the portion of the segment T .which extends outwardly beyond the outer end of the former I3 is folded against that end by contact with a stationary brush 22 to provide the bottom wall b of the bag. The brush 22 wipes against the forward side of the segment T and folds it against the former as shown on the extends rearwardly beyond the formerl3. Substantially at that time the finger I5 is swung outwardly away from the former so that the rod 2| may be moved downwardly with the roller 23 engaging the prujecting portion of the segment T folding the same against the adjacent side of the former and providing the side wall 0. After the roller 23 commences its retracting movement the finger l5 swings abruptly against the former, holding the side 0 thereagainst.

It will be understod that portions of the segment T (side folds (I) extend laterally beyond opposite ends of the former l3 and in order to fold these portionsthereof into engagement with the ends of the former, a U-shaped folding member 26, carried by a rod 21 moves downwardly,

folding such laterally projecting portions of the segment T against the ends or the former l3, as

indicated in Figure 6. It will be seen that the 1 .e, which project laterallyfrom the former, are

brought into engagement with a stationary finger 29 disposed in the path of movement thereof, thereby folding these portions upon the side folds f and completing the folding of the bag or liner, except for the outer end which remains open.

As shown in Figure 3, lines of adhesive 30 are provided along opposite sides of the liner segment T and when these portions are pressed against other portions of the folded bag the latter is retained in folded condition. The adhesive may be applied in any suitable manner as, for example, it may be applied initially as the material is-withdrawn from the roll L or it may be applied by the brush 22, in which case, two brushes would be desirable to apply the individual strips of adhesive.

As above mentioned, the carton blank is fed from a supply roll C and, in accordance with this invention, the carton blanks are formed in a continuous strip V, segments of a suitable size to form the carton being periodically severed from the continuous strip. Figure 2 shows in plan a portion of the strip V made up of integral series of carton body blanks. Each blank consists of bottom panel :0, side panels y and z disposed on opposite sides of the bottompanel and a closing flap w to which is connected the usual tongue w adapted to be tucked inside the carton. The tongue w is integrally connected to the next succeeding carton body blank, being joined to a side panel 1/. Extending laterally from the opposite ends of the panels 1:, y and z are tabs 2:, yfand 2 respectively and end panels for the carton are connected to these tabs, as will hereinafter be described.

Formed in the forward edge of the panel y is a cutout 3| in the form of a half circle and into this opening is adapted to extend a pin 32 on a feed wheel 33. The wheel 33 carries a plurality of pins 32 and is driven in step by step manner in timed relation to the movement of the chain or carrier Ill. The wheel 33 cooperates with a pair of feed rolls 33* to advance the carton body strip V to a table 34 adjacent to which is mounted a tab folder 35 which serves to fold the tabs at, 1/ and z downwardly at substantially right angles to their respective panels during the advancing movement of the strip V.

The strip V is advanced beyond the tab folder 35 to a position directly above the former l3 on which a bag or liner has been folded. A carton body blank is then severed from the strip by a knife 36 which is carried by an arm 31 connected to a vertically movable rod 38. The arm 38 also provides one side of the carton body folder, being disposed in opposed relation to a side folder 39. The arm 31 folds the panel 2 downwardly and the arm 39 folds the panel 1 downwardly against the sides of the former. Relatively short arms 40 are disposed at right angles to the arms 31 and 39, as indicated in Figure 5, for imparting additional folding action with respect to the opposed tabs :0.

It will thus be seen that when a carton body blank is disposed in the proper position the rod 38 moves downwardly and the carton body blank is first severed from the strip V and upon further downward movement of the rod 38 the sides y and z are folded inwardly toward each other spective former has moved into engagement with a tab retaining plate 42, and then the arm 4| retracts to the next succeeding former.

The tabs on opposite ends oi. the carton body are then covered with a coating of adhesive, preferably glue. In the next advancing movement of the carrier III the tabs 1:, y and z encounter adhesive applying rolls 43 which cover them thoroughly with adhesive. It will be understood that during the above advancing movements the arms l4 and 15 remain in engagement with the side panels 3 and 2 respectively, retaining the same in intimate engagement with the folded bag or liner disposed upon a former l3.

The former l3 with its bag or liner and carton body folded as above described advances or is indexed to a station where end panels 12 are fed to the carton. Two supply rolls E and E of end panels are disposed on opposite sides of the path of movement of the carton body or former. Each roll contains a continuous strip of end panels p, each having an integral extension flap p, the flap 1 being integrally connected .to the next preceding panel p. Since the strips from the rolls E and E are handled invthe same manner, description of only one will be given. As shown a feed roll 44 is provided with'laterally spaced .pins 45, which are arranged to engage successively the rear end of each end panel p in the region of the flap p.

The feed roll 44 is driven in a step by step manner in timed relation to the advancing movement of the carrier H)v and advances the strip to a platen 46 which is normally disposed in an outwardly inclined position and is pivotally mounted at 46. At the proper time a vertically movable slide 41 actuated in any suitable manner by an arm 48, moves upwardly to rock an arm 49 upwardly. The arm 49 actuatesthe platen 46 toward the strip and against a stationary knife blade 5|] to sever the advanced endpanel from the strip. 'I'hereupon the platen 46 swings inwardly toward the carton body and is pressed against the end tabs 93', 1/ and z to'which glue has previously been applied, thereby securing the end panel in proper position against the car- Each of the formers I3 is provided with alongl tudinal passage 5| which opens at the outer end.

When each former has advanced to the proper station a jet of air is introduced into the passage 5| to discharge the finished carton and its liner. At this time the arms l4 and I5 areswung outwardly to release the carton, and thus the'carton and its liner are discharged from the machine and are ready to be introduced to a machine or apparatus which fills the package or liner with lard or other similar material in a fluid state, whereupon the bag and carton are closed.

From the above description it will be seen that a relatively simple and inexpensive method of making cartons as well as the liners therefore is provided. Important characteristics of the invention reside in feeding the carton body and end panels in continuous strip formation and in forming the carton about a previously folded bag or liner. As completed the carton is ready to be filled, the liner being open at the upper end and fitting snugly inside of the carton. The amount of material used in making the carton is kept to a minimum and the cost of it is accordingly re duced.

' It is to be understood that changesin details the invention, especially as defined in the appended claims.

What I claim as new and desire to secure by Letters Patent is:

. step manner a continuous strip of carton body blanks, means for periodically severing a body blankfrom such strip, each carton body including a bottom panel and a side panel on opposite sides of the bottom panel and tabs projecting from the ends of such panels, a series of means for folding a carton body blank over the folded bag disposed on one side of said formers, means for feeding in timed relation to the movement of said carrier 9. continuous strip of end panels to the carrier in the path'of movement of the formers, means for severing an end panel from each strip, and means for securing a severed end panel to the tabs on opposite ends of the folded carton body blank. 7

2. Apparatus for making cartons and liners therefor comprising, a former, means to advance a sheet of relatively light fiexible material to the former, means for progressively folding the sheet upon the former to provide a bag one end of which is closed and the opposite end of which is open, means for folding a carton body blank over the folded bag, said carton body blank including a bottom panel and a side panel on opposite sides of said bottom panel and tabs extending from the ends of such panels, means to feed a continuous strip of end panels to opposite ends of the folded carton body, means to sever an end panel from each strip, and means for securing a severed end panel to the tabs at each end of the folded carton body blank.

3. Apparatus for making cartons and liners therefor comprising-a formefi'means to advance a sheet of relatively light flexible material through the former, means for progressively folding the sheet upon the former to provide a bag one end of which is closed and the opposite end of which is open, means for advancing a continuous strip of carton body blanks,- each blank including a bottom panel and a side panel on opposite sides of said bottom panel and tabs extending from the ends of said panels, means for severing body blanks from such. strip, means for folding a body blank over a folded bag, means to' feed end panels to opposite ends of the folded carton body, and means for securing such end panels to the tabs at each end of the folded carton. body.

4. Apparatus for making cartons and liners therefor-comprising, a former, means to advance a sheet of relatively light flexible material through the former, means for progressively folding the-sheet upon the former to provide a' bag 'one end of which is closed and the opposite end of which is open, means for advancing a continuous strip of .carton body blanks, each blank including a bottom panel and a side panel on upposite sides of said panels, means for severing body blanks from such strip, means for folding a. body blank over a folded bag, means to feed a continuous strip of end panels to opposite ends of the-folded carton body, mea ns to sever an end panel frome'ach strip, and fon secunng; a

severed end panel to the tabs at each end of the folded carton body.

5. Apparatus for making cartons comprising, an endless carrier for a step by step movement, a series of formers on said carrier, means for feeding to each former a sheet of relatively thin flexible material means for progressively folding the sheet upon the former to provide a bag one end of which is closed and the opposite endof which is open, means for advancing a continuous strip of carton body blanks, means for severing individual body blanks from such strip, each carton body blank including a bottom panel and a side panel on opposite sides of the bottom panel and tabs projecting from the ends of such panels,

means for folding a carton body blank over the folded ba means to feed a continuous strip of end panels to opposite ends of the folded carton body, means to sever-an end panel from each strip, and means for securing a severed end panel to the tabs at each end of the folded carton body.

EDWARD'F. NESS. 

